SU659440A1 - Arrangement for translating coded signals in a.c. interlocking system - Google Patents

Description

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BACKGROUND OF THE INVENTION The invention relates to the means of interval control of the speed of movement of trains in railway transport.

A device for translating numerical code signals is known that contains a transmitting relay and is connected to a track circuit through its front contact an alternating current source and a track relay connected to an adjacent track circuit 1.

In this device, when transmitting, significant distortions of the temporal characteristics of the code signals are possible, which lead to failure of the locomotive signaling system.

It is also known a device for transmitting code signals in an automatic blocking of alternating current, containing a transmitting relay and an AC source connected to a rail circuit through its front contact, a path relay connected to an adjacent rail circuit, a pulse control unit transmitting a relay and a pulse generator 2. V This device corrects the reduction in the duration of a small pause in the code cycle by reducing the duration of subsequent pulses.

A disadvantage of this device is the lack of correction of a small pause when

increase its duration during the broadcast. With repeated broadcasting, the distortion of the code signals in the split block sections often leads to violation

work locomotive alarm.

The aim of the present invention is to reduce the distortion of the temporal characteristics of the code signals and increase the reliability of the automatic locomotive signaling.

This goal is achieved by the fact that the code signal translation device is supplied connected to a power source via a diode and a rear contact of a track relay, a small interval correction relay, a code cycle separation relay connected to a power source through a front contact of a track relay and in parallel switched on its own front contact and the front contact of the small interval correction relay, the double-winding relay of the small interval change control, one winding of which is connected in parallel to the separation relay code cycles

through the rear contact of the small interval correction relay, and the other winding to the power source via the rear track relay contact, diode, front contact of the code cycle separation relay and own front contact, parallel to the code cycle separation relay and small interval correction relay, slow circuits are connected the control unit for pulse operation is connected to the power source through the rear contact of the control relay for changing small intervals, and the transmitting relay is connected to the power source through the front e contacts of the control unit for pulse operation and the control relay for changing a small interval. The drawing shows a diagram of the device for the translation of code signals in the automatic blocking of alternating current. Track chokes-transformers 2 are connected to rails 1. The device also contains a relay relay 3, through front contact 3.1 of which one of the track chokes transformers 2 is connected via filter 4 and transformer 5 to an alternating current source (not shown). Another path choke-transformer through the receiving filter 6 is connected with a track relay. Through the rear contact 7.1 of the track relay and diode 8 to the source of direct current is connected relay 9 adjustment of small intervals with contacts 9.1 and 9.2. Through the front contact 7.2 of the relay 10, the division of code cycles with contacts 10.1 and 10.2 is connected to the power source through the contact 7.2 of the relay 7 and the front contacts 9.1 in parallel of the relay 9 and 10.1. Parallel to the code cycle separation relay 10, through the rear contact 9.2 of the small interval correction relay 9, one of the windings of the small interval change control relay 11 is connected. Another winding of the relay 11 is connected to the power source via the rear contact 7.1 of the track relay 7, a diode 12, the front contact 10.2 of the relay 10 and its own front contact 11.1. Parallel to this winding of the relay 11 is connected a varistor 13. Parallel to the relay 10 is connected a deceleration circuit consisting of a diode 14 and a resistor 15. A similar circuit consisting of a diode 16 and a resistor 17 is connected in parallel to the small interval correction relay 9. Through the rear contact 11.2 of the relay 11 monitoring the change of a small interval, the power supply control unit 18 is connected to the pulse operation control unit 18, through the front contact 18.1 of which and the front contact 11.3 of the relay 11 controlling the change of the small interval the transmitting relay 3 is turned on. The broadcasting device works as follows. Receiving power from the track circuit through a choke transformer 2 and the receiving filter b, the track relay 7 reproduces the pulses of the code current. In the intervals of the code cycle through the rear contact 7.1 of the track relay 7 receives power relay 9 adjustment of small intervals. When the first pulse of the code signal is received through the front contact 7.2 of the pulse track relay 7, it is energized and blocked during the small interval of the relay 10 for separation of code cycles. The rear contact 7.1 of the track relay 7 cuts off a small interval adjustment relay 9, which, having sustained the falloff deceleration time, releases its measles and connects with the rear contact 9.2 the excitation value of a two-winding small interval change control relay 11. In the interval of the code signal, relay 9 is again energized. With the next current pulse in the track circuit, the rear contact 7.1 of the track relay 7 terminates the power supply circuit of the relay 9 and relay 11, the latter releases its measles, and the relay 9 holds the measles pulled down due to the retardation caused by a diode 16 and a resistor 17. The rear contact 9.2 of the relay 9 closes the relay coil circuit 11, which is energized and the front contact 11.1 prepares a self-locking circuit through the rear contact 7.1 of the track relay 7. At the beginning of the next pulse of the code cycle When the excitation of the relay track 7 releases its armature relays 11, a change in control of a small interval. In small intervals, the relay 10 for separating code cycles, having a slowdown due to falling off due to diode 14 and resistor 15, keeps its measles tight. In a large interval, relay 10 de-energizes by preparing the circuit to receive the next code cycle. The contacts of the relay 10, which separates the code cycles, and the relay 9 for correcting small intervals of code cycles, the transmission of the second and third pulses received from the track relay 7, is delayed until the nominal duration of the small interval of the code cycle of green or yellow fire is formed. The duration of the small interval of the code cycle at the contacts of the relay 11 for monitoring the change of the small interval is stable and equal to the total time of failure of the relay 9 for adjusting the small intervals of the code cycle and for the time of attracting and dropping the relay AND controlling the change of the small interval. Block 18 monitors the pulse operation of relay 11 and, during normal operation, closes contact 18.1 in relay circuit 3, which transmits pulses of code signals, which pulses power to terminal 11.3 of relay II for monitoring a small interval change. Through the front contact 3.1 of the relay relay 3, the corrected code pulses are sent to the adjacent rail circuit. The duration of a small interval when the code pulses are transmitted by the contacts of the relay 3 to the adjacent rail circuit of the split block is equal to the total time of the relay 9 for adjusting the small interval, the response time and the time for the relay AND for monitoring the change of the small interval and relay 3 transmitting the code signal pulses.

Varistor 13 is used in the device to protect the relay contacts from overvoltages, and diodes 8 and 12 are used to eliminate the mutual influence of the relay 9 for correcting small intervals and the relay 11 for controlling the change in small interval.

Thus, the proposed device automatically generates small intervals and code signals are transmitted to the track circuit at fixed small intervals regardless of the length of the interval reproduced by the track relay.

The use of the proposed device for translating numerical code signals in the automatic blocking of alternating current will increase the reliability of the transmission of code signals and the stability of the automatic locomotive signaling system.

Claims (2)

1. Ieuchasov NM and others. Designing an automatic lock on the railway transport, “Transport, 1970, with. 118-119. 2. USSR author's certificate number 115721, cl. B 61L 23/14, 19.02.58. Cg